Vendor dependencies
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411
vendor/tokio/tests/uds_stream.rs
vendored
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411
vendor/tokio/tests/uds_stream.rs
vendored
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@ -0,0 +1,411 @@
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#![cfg(feature = "full")]
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#![warn(rust_2018_idioms)]
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#![cfg(unix)]
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use std::io;
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use std::task::Poll;
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use tokio::io::{AsyncReadExt, AsyncWriteExt, Interest};
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use tokio::net::{UnixListener, UnixStream};
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use tokio_test::{assert_ok, assert_pending, assert_ready_ok, task};
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use futures::future::{poll_fn, try_join};
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#[tokio::test]
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async fn accept_read_write() -> std::io::Result<()> {
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let dir = tempfile::Builder::new()
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.prefix("tokio-uds-tests")
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.tempdir()
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.unwrap();
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let sock_path = dir.path().join("connect.sock");
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let listener = UnixListener::bind(&sock_path)?;
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let accept = listener.accept();
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let connect = UnixStream::connect(&sock_path);
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let ((mut server, _), mut client) = try_join(accept, connect).await?;
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// Write to the client.
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client.write_all(b"hello").await?;
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drop(client);
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// Read from the server.
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let mut buf = vec![];
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server.read_to_end(&mut buf).await?;
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assert_eq!(&buf, b"hello");
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let len = server.read(&mut buf).await?;
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assert_eq!(len, 0);
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Ok(())
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}
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#[tokio::test]
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async fn shutdown() -> std::io::Result<()> {
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let dir = tempfile::Builder::new()
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.prefix("tokio-uds-tests")
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.tempdir()
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.unwrap();
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let sock_path = dir.path().join("connect.sock");
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let listener = UnixListener::bind(&sock_path)?;
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let accept = listener.accept();
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let connect = UnixStream::connect(&sock_path);
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let ((mut server, _), mut client) = try_join(accept, connect).await?;
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// Shut down the client
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AsyncWriteExt::shutdown(&mut client).await?;
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// Read from the server should return 0 to indicate the channel has been closed.
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let mut buf = [0u8; 1];
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let n = server.read(&mut buf).await?;
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assert_eq!(n, 0);
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Ok(())
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}
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#[tokio::test]
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async fn try_read_write() -> std::io::Result<()> {
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let msg = b"hello world";
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let dir = tempfile::tempdir()?;
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let bind_path = dir.path().join("bind.sock");
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// Create listener
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let listener = UnixListener::bind(&bind_path)?;
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// Create socket pair
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let client = UnixStream::connect(&bind_path).await?;
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let (server, _) = listener.accept().await?;
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let mut written = msg.to_vec();
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// Track the server receiving data
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let mut readable = task::spawn(server.readable());
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assert_pending!(readable.poll());
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// Write data.
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client.writable().await?;
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assert_eq!(msg.len(), client.try_write(msg)?);
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// The task should be notified
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while !readable.is_woken() {
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tokio::task::yield_now().await;
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}
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// Fill the write buffer using non-vectored I/O
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loop {
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// Still ready
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let mut writable = task::spawn(client.writable());
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assert_ready_ok!(writable.poll());
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match client.try_write(msg) {
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Ok(n) => written.extend(&msg[..n]),
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Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
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break;
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}
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Err(e) => panic!("error = {:?}", e),
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}
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}
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{
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// Write buffer full
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let mut writable = task::spawn(client.writable());
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assert_pending!(writable.poll());
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// Drain the socket from the server end using non-vectored I/O
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let mut read = vec![0; written.len()];
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let mut i = 0;
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while i < read.len() {
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server.readable().await?;
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match server.try_read(&mut read[i..]) {
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Ok(n) => i += n,
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Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => continue,
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Err(e) => panic!("error = {:?}", e),
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}
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}
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assert_eq!(read, written);
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}
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written.clear();
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client.writable().await.unwrap();
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// Fill the write buffer using vectored I/O
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let msg_bufs: Vec<_> = msg.chunks(3).map(io::IoSlice::new).collect();
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loop {
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// Still ready
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let mut writable = task::spawn(client.writable());
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assert_ready_ok!(writable.poll());
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match client.try_write_vectored(&msg_bufs) {
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Ok(n) => written.extend(&msg[..n]),
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Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
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break;
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}
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Err(e) => panic!("error = {:?}", e),
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}
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}
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{
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// Write buffer full
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let mut writable = task::spawn(client.writable());
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assert_pending!(writable.poll());
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// Drain the socket from the server end using vectored I/O
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let mut read = vec![0; written.len()];
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let mut i = 0;
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while i < read.len() {
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server.readable().await?;
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let mut bufs: Vec<_> = read[i..]
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.chunks_mut(0x10000)
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.map(io::IoSliceMut::new)
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.collect();
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match server.try_read_vectored(&mut bufs) {
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Ok(n) => i += n,
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Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => continue,
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Err(e) => panic!("error = {:?}", e),
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}
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}
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assert_eq!(read, written);
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}
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// Now, we listen for shutdown
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drop(client);
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loop {
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let ready = server.ready(Interest::READABLE).await?;
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if ready.is_read_closed() {
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break;
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} else {
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tokio::task::yield_now().await;
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}
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}
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Ok(())
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}
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async fn create_pair() -> (UnixStream, UnixStream) {
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let dir = assert_ok!(tempfile::tempdir());
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let bind_path = dir.path().join("bind.sock");
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let listener = assert_ok!(UnixListener::bind(&bind_path));
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let accept = listener.accept();
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let connect = UnixStream::connect(&bind_path);
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let ((server, _), client) = assert_ok!(try_join(accept, connect).await);
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(client, server)
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}
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macro_rules! assert_readable_by_polling {
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($stream:expr) => {
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assert_ok!(poll_fn(|cx| $stream.poll_read_ready(cx)).await);
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};
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}
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macro_rules! assert_not_readable_by_polling {
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($stream:expr) => {
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poll_fn(|cx| {
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assert_pending!($stream.poll_read_ready(cx));
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Poll::Ready(())
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})
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.await;
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};
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}
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macro_rules! assert_writable_by_polling {
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($stream:expr) => {
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assert_ok!(poll_fn(|cx| $stream.poll_write_ready(cx)).await);
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};
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}
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macro_rules! assert_not_writable_by_polling {
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($stream:expr) => {
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poll_fn(|cx| {
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assert_pending!($stream.poll_write_ready(cx));
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Poll::Ready(())
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})
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.await;
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};
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}
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#[tokio::test]
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async fn poll_read_ready() {
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let (mut client, mut server) = create_pair().await;
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// Initial state - not readable.
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assert_not_readable_by_polling!(server);
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// There is data in the buffer - readable.
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assert_ok!(client.write_all(b"ping").await);
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assert_readable_by_polling!(server);
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// Readable until calls to `poll_read` return `Poll::Pending`.
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let mut buf = [0u8; 4];
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assert_ok!(server.read_exact(&mut buf).await);
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assert_readable_by_polling!(server);
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read_until_pending(&mut server);
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assert_not_readable_by_polling!(server);
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// Detect the client disconnect.
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drop(client);
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assert_readable_by_polling!(server);
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}
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#[tokio::test]
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async fn poll_write_ready() {
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let (mut client, server) = create_pair().await;
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// Initial state - writable.
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assert_writable_by_polling!(client);
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// No space to write - not writable.
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write_until_pending(&mut client);
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assert_not_writable_by_polling!(client);
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// Detect the server disconnect.
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drop(server);
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assert_writable_by_polling!(client);
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}
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fn read_until_pending(stream: &mut UnixStream) {
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let mut buf = vec![0u8; 1024 * 1024];
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loop {
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match stream.try_read(&mut buf) {
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Ok(_) => (),
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Err(err) => {
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assert_eq!(err.kind(), io::ErrorKind::WouldBlock);
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break;
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}
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}
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}
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}
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fn write_until_pending(stream: &mut UnixStream) {
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let buf = vec![0u8; 1024 * 1024];
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loop {
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match stream.try_write(&buf) {
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Ok(_) => (),
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Err(err) => {
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assert_eq!(err.kind(), io::ErrorKind::WouldBlock);
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break;
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}
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}
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}
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}
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#[tokio::test]
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async fn try_read_buf() -> std::io::Result<()> {
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let msg = b"hello world";
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let dir = tempfile::tempdir()?;
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let bind_path = dir.path().join("bind.sock");
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// Create listener
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let listener = UnixListener::bind(&bind_path)?;
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// Create socket pair
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let client = UnixStream::connect(&bind_path).await?;
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let (server, _) = listener.accept().await?;
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let mut written = msg.to_vec();
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// Track the server receiving data
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let mut readable = task::spawn(server.readable());
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assert_pending!(readable.poll());
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// Write data.
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client.writable().await?;
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assert_eq!(msg.len(), client.try_write(msg)?);
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// The task should be notified
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while !readable.is_woken() {
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tokio::task::yield_now().await;
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}
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// Fill the write buffer
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loop {
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// Still ready
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let mut writable = task::spawn(client.writable());
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assert_ready_ok!(writable.poll());
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match client.try_write(msg) {
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Ok(n) => written.extend(&msg[..n]),
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Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
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break;
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}
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Err(e) => panic!("error = {:?}", e),
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}
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}
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{
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// Write buffer full
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let mut writable = task::spawn(client.writable());
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assert_pending!(writable.poll());
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// Drain the socket from the server end
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let mut read = Vec::with_capacity(written.len());
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let mut i = 0;
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while i < read.capacity() {
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server.readable().await?;
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match server.try_read_buf(&mut read) {
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Ok(n) => i += n,
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Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => continue,
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Err(e) => panic!("error = {:?}", e),
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}
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}
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assert_eq!(read, written);
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}
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// Now, we listen for shutdown
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drop(client);
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loop {
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let ready = server.ready(Interest::READABLE).await?;
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if ready.is_read_closed() {
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break;
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} else {
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tokio::task::yield_now().await;
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}
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}
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Ok(())
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}
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// https://github.com/tokio-rs/tokio/issues/3879
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#[tokio::test]
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#[cfg(not(target_os = "macos"))]
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async fn epollhup() -> io::Result<()> {
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let dir = tempfile::Builder::new()
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.prefix("tokio-uds-tests")
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.tempdir()
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.unwrap();
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let sock_path = dir.path().join("connect.sock");
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let listener = UnixListener::bind(&sock_path)?;
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let connect = UnixStream::connect(&sock_path);
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tokio::pin!(connect);
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// Poll `connect` once.
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poll_fn(|cx| {
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use std::future::Future;
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assert_pending!(connect.as_mut().poll(cx));
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Poll::Ready(())
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})
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.await;
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drop(listener);
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let err = connect.await.unwrap_err();
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assert_eq!(err.kind(), io::ErrorKind::ConnectionReset);
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Ok(())
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}
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